Brand Roland Number of Keys 88 Skill Level Professional Special Feature hammer_action Item Weight 13.5 kg Professional RD stage piano with expanded sounds, including the SuperNATURAL Acoustic Piano 3 Expansion Acclaimed SuperNATURAL pianos and electric pianos ZEN-Core engine with over 3000 additional sounds, including organs, synths, strings, brass, and more World-class playability with the 88-note PHA-4 keyboard with hammer action and Ivory Feel Room-filling onboard stereo speaker system